Improvement in sash-holders



F'. M. DAVIS.

Sash-Holders.

N0. 142,994. Patented September 23,1873.

WITNESSES: v y i' l v v mVENTOR:

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UNITED STATES PATENT QEEIGE.

FRANCIS MARION DAVIS, OF LA CYGNE,'KANSAS.

IMPROVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 142,994, datedSeptember 23, 1873; application filed February 25, 1873.

To all whom it may concern:

Be it known that I, FRANCIS MARION DA- VIS, of La Cygne, in the countyof Linn and State of Kansas, have invented a certain Sash-Holder, ofwhich the following is a speciication:

This invention relates to a simple form of automatic sash -holder,applied within the windoW-jamb, and reversible to lock the lower sashclosed. The invention consists in a friction-cam journaled inamortise-fra-me by means of an angular shaft, which is furnished with aknob having a grooved neck to receive a retaining-pin, the sameoperating as hereinafter set forth.

Figure 1 is a face view, partly in section, of a window with sash holderapplied, illustrating this invention. Fig. 2 represents averticalsection on the line e z, Fig. l. Fig. 3 is a perspective view of aholder detached. Fig. 4 and Fig. 5 are sectional detail views of a hold-1n g-cam.

rlhe drawing is not made to a scale.

To carry out this invention mortises c are formed in either jamb of awindow-frame, A, on each side of the parting-rail. Intersectin g holes bare bored through from the face of the frame, and a segmental recess, c,concentric with the lower of these holes, is cut in the edge of thelower sash B. The upper sash B2 requires no special conformation.

The remaining parts of the device, or the holders proper, are designedto be cheaply manufactured in quantity for supply to builders anddealers; and are adapted for application to either side of the frame.One part, metallic frames d, are applied in the mortises a so as to beflush, and are secured by countersunk screws. Cams e are placed withinthe cavities of these frames, and secured and journaled by means ofshafts f introduced through the holes b; and to these shafts knobs g areapplied to constitute the means, primarily, for operating the camsthrough the shafts, and, in a subordinate capacity, to securethe camsand shafts in position. These cams e are each cast with acircumferential groove, 1, and in this a rubber band, 2, is applied toform a sensitive frictional bearing-surface. f are constructed withsquares 3 4 to engage with corresponding sockets in the cams e and knobsg, and with cylindrical journals 5 6, thel outer larger than thesquares, which may be of equal size; and the inner smaller, to admit ofthe application of the shafts in the manner stated. The knobs g haveeach a circumferentially-groovcd neck, 7, occupying the outer end of oneof the holes b, and engaged by a retaining-pin, 8, introduced from theedge of the frame.

The knobs may be of ornamental material or configuration.

The shafts differ in length. The other parts may be of uniform size forthe different sashes.

The operation of the improved holder is as follows: In normal conditionthe cams e rest v against the edges of the sashes, and engage therewithby friction. The weight of the sashes thus tends to rotate the cams,which is prevented by the position of the shafts. 'The sashes are,consequently, supported until released by turning back the cams by meansof the knobs g. When a sash is lifted the cams slip, and hold againautomatically when the motion of the sash is reversed. When the lowersash is down the recess c in the edge 'thereof is brought opposite thelower cam c, which then drops, or may be turned to the positionrepresented in Fig. 1, so as to lock the Window closed by a reversal ofthe described action. The sash is released by turning the cam back asfor lowering the same.

The following is claimed as new, namely:

A sash-holder, composed of a mortise-frame, d, a cam, c, withcircumferential groove 1 and rubber band 2, a shaft, f, with squares 3 4andi journals 5 6, and a knob, g, with grooved neck 7, fitted to receivea retaiuingpin, as herein shown and described.

FRANCIS MARION DAVIS.

Witnesses:

S. D. CADY, H. S. CADY.

The shafts

